12:15 PM - 1:15 PM
[P-31] A proposed framework for clarifying consequence impacts chain of tsunami hazards on global seaborne network
Keywords:Global Seaborne network, Supply chain, Consequence impact chain, Tsunami numerical simulation, Hazard mitigation
With more than 90 percent world trade carried by ships, global seaborne network provides most energy efficient type of long-distance transportation for large quantities of merchandise and consequently enhanced its role in global supply chain during the past decades. However, this growth in interdependence of supply chain has significantly increased the exposure of ports and maritime network and make it even more vulnerable to tsunami hazards. The most well-known empirical evidence is the Great East Japan Earthquake tsunami in 2011, the sharp drop of Japanese exports of vehicle parts and components due to disruption of ports on east coast of Japan and consequently result in dramatically decreasing of output value in vehicle and related manufacturing industries in the world. This can be explained by the fact that impacts of tsunami are not only single occurrence in region but also complex occurrence in global scale due to disconnection of supply chain. While this phenomenon has been discussed repeatedly in previous, still little related studies are available. To fulfill the lack understanding of consequence chain impacts of tsunami hazard on global seaborne network, tsunami numerical simulation is conducted to display tsunami force and global seaborn network is constructed base on public shipping route information provided by OCCL corporation, Hongkong to investigate global- scale impacts of tsunami hazards. This study proposed a framework for clarifying global chain impacts of tsunami hazards in the purpose of quantifying global impacts associated with tsunami event and could further provide information for developing strategies for hazard mitigation.